Programmatic Node movement including children?

[jles...@gmx.de]

Hello Piccolos
I've got a question about moving Nodes around. When I do that interactively e.g. by dragging a node, Piccolo takes care about moving all the node's children respectively. However, if I move a Node programmatically by calling setX(), setY(), or setBounds(), the child nodes keep their positions unchanged. So currently I always add some code which adapts the childrens' positions as well.
But before I spread this pattern all over a more sophisticated application's code, I'd rather like to ask if there is already something around which applies a node movement recursively to all its children. I couldn't find any corresponding example or a method with a name which implies that kind of functionality.

Regards,
Jan

[Lalit Pant]

You can try setOffset(x, y) or translate(dx, dy). That affects the node's transform, so all child nodes will be similarly affected.

Cheers,
- Lalit

[Michael Heuer]

Good advice, Lalit.

This doc here explains some of the more non-obvious aspects of the
Piccolo2D library design

http://piccolo2d.org/learn/patterns.html

Pattern 9: Full Terminology and Pattern 10: Coordinate Systems in particular.

michael

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[Mustafa Shujaie]

I have a hierarchy of nodes in which I have to inform the children that their parent's bounds are changed so they have to update their bounds relative to their parents. While reading the setbounds source code I realized that there is a method named parentBoundsChanged which you can override so that the children nodes become aware of this change and can update their bounds to new position. I thought this may be helpful for you.